baber/WOPTO huggingface dataset:
Patent TW-202141862-A (TW)
Title: Electrical connectors
Inventor: PITTEN TOM
IPC: H01R13/03
Filed: 2016-04-14
Abstract: Embodiments related to electrical connectors including superelastic components are described. The high elastic limit of superelastic materials compared to conventional connector materials may allow for designs which provide reliable connections and high frequency operation. Superelastic components also may enable connector designs with higher densities of connections. In some embodiments, a connector includes one or more superelastic elongated members forming the mating contacts of the connector. The superelastic elongated members deform within one or more conductive receptacles to generate a suitable contact force. The conductive receptacles may include a plurality of protrusions arranged to deflect the superelastic elongated members during mating. A superelastic component may also be provided in a receiving portion of a connector, and may form a portion of a conductive receptacle.
Patent TW-202218727-A (TW)
Title: Separation module, separation device, and separation system
Inventor: NISHI YOICHIRO
IPC: B01D39/04
Filed: 2021-08-02
Abstract: The present invention provides a separation module whereof the clogging can be suppressed. In order to solve this problem, the separation module 40, which separates a fluid T from a fluid L1 subjected to separation, comprises: a filter 10 constituted from an organic material or a metallic material and having filter holes 14 each extending in a straight line along the thickness direction; and a support 20 which supports the filter 10 on a surface and has support holes 23 each extending in a straight line along the thickness direction, wherein there is an overlap between openings 112 of the filter holes 14 on the support 20 side and openings of the support holes 23 on the filter 10 side.
Patent TW-202212451-A (TW)
Inventor: KIM HYUN-KYU
IPC: C08K5/11
Filed: 2021-08-09
Abstract: The present invention relates to a plasticizer composition including a lower alkyl-based citrate and a higher alkyl-based citrate simultaneously as citrates, wherein effects are achieved through controlling the ratio of hybrid and nonhybrid types, and the ratio of lower alkyl and higher alkyl, and if the plasticizer composition is applied in a resin, stress resistance and mechanical properties may be maintained to the equal or better levels, balance between migration and loss properties, and plasticization efficiency may be achieved, and light resistance and heat resistance may be markedly improved.
Patent TW-202243255-A (TW)
Inventor: MORE SHAHAJI B
IPC: H01L27/092
Filed: 2021-08-10
Abstract: 一種半導體結構包含基材之上的n型磊晶源極/汲極特徵(NEPI)及p型磊晶源極/汲極特徵(PEPI)，其中NEPI的頂部表面低於PEPI的頂部表面。半導體結構進一步包含設置在NEPI的頂部表面及PEPI的頂部表面上的金屬化合物特徵；設置在金屬化合物特徵上並在NEPI及PEPI二者之上的觸點特徵；以及設置在觸點特徵之上及在NEPI之上的通孔結構，其中通孔結構部分地位於觸點特徵中。
Patent TW-202212875-A (TW)
Title: Method for producing phase difference layer-equipped polarizing plate
Inventor: KOJIMA TADASHI
IPC: G02F1/1335
Filed: 2021-08-27
Abstract: Provided is a simple and efficient method for producing a phase difference layer-equipped polarizing plate in which warp is suppressed. A method for producing a phase difference layer-equipped polarizing plate according to an embodiment of the present invention includes: obtaining a phase difference layer-equipped polarizing plate by, during roll conveyance of a polarizing plate and a phase difference layer, stacking the polarizing plate and the phase difference layer with an active energy ray-curing adhesive therebetween in an environment where the amount of saturated water vapor is not more than 10.2 g/m3; humidifying the phase difference layer-equipped polarizing plate in an environment of 18-34 DEG C and 60-90%RH during roll conveyance of the phase difference layer-equipped polarizing plate, such that the weight thereof per unit volume increases by not less than 0.2%; and rolling up the humidified phase difference layer-equipped polarizing plate into a roll shape and storing the phase difference layer-equipped polarizing plate in the rolled state for not less than 6 hours. The total thickness of the phase difference layer-equipped polarizing plate is not more than 80 [mu]m. The ratio between the thickness of the polarizing plate and the thickness of the phase difference layer (polarizing plate/phase difference layer) is not less than 5.
Patent TW-202312595-A (TW)
Title: Fixing mechanism, interface card assembly and electronic apparatus
Inventor: HUANG WEI-LI
IPC: G06F1/16
Filed: 2021-09-02
Abstract: A fixing mechanism is applied to an interface card assembly and an electronic apparatus. The fixing mechanism includes a movable window and an operation component. The movable window is slidably disposed on a casing of the interface card assembly. The operation component has a fixed end and a free end opposite to each other. The fixed end is disposed on the movable window. The free end is detachably engaged with the casing to position the movable window. The movable window is positioned on one of a first region and a second region of the casing for respectively fixing interface cards with different sizes.
Patent TW-202215523-A (TW)
Title: Fine adjustment device
Inventor: YAMANAKA SATOSHI
IPC: H01L21/304
Filed: 2021-09-29
Abstract: A fine adjustment device that is interposed between a table base rotatably supporting a chuck table for holding a workpiece on a holding surface and a base supporting the table base and that adjusts a distance between the table base and the base. The fine adjustment device includes: a support member that has an upper section and an intermediate section and a lower section, with the upper section fixed to the table base and with the intermediate section fixed to the base; an accommodating chamber formed in the support member; a piezoelectric actuator that is accommodated in the accommodating chamber and is capable of contracting and extending in a perpendicular direction; and a contraction-extension structure to have the accommodating chamber contracted and extended in the perpendicular direction.
Patent TW-202227499-A (TW)
Title: Binding proteins recognizing ha-1 antigen and uses thereof
Inventor: NAYAR RIBHU
IPC: C07K16/28
Filed: 2021-11-08
Abstract: Provided herein are binding proteins recognizing HA-1 antigen and uses thereof.
Patent TW-202223080-A (TW)
Inventor: HSU CHIA-HSIEN
IPC: C12N5/00
Filed: 2021-11-10
Abstract: 本發明係提供一種高效的單細胞採集方法，係透過特殊設計的採集孔與採集吸管，將孔中的微粒/細胞收集至採集吸管中。本發明之採集孔與採集吸管的結構可消除採集過程中所可能產生的的液體無效體積，進而使所有(或大部份)的微粒/細胞可隨著液體流動而進入採集吸管中。本發明在細胞操作方面，具有細胞收齊效率高、細胞損傷小與操作簡便等優點。
Patent TW-202222752-A (TW)
Title: Thinner composition for metal-containing resist
Inventor: CHUN JI-MIN
IPC: C07C209/00
Filed: 2021-11-26
Abstract: The present invention provided a thinner composition for metal-containing resist including alkanol amine compound, aromatic alcohol compound, and solvent. The thinner composition for metal-containing resist provided from the present invention can reduce the used amounts of metal-containing resist, tin-based resist specifically, or remove it effectively.
Patent TW-202243198-A (TW)
Title: Capacitance fine tuning by fin capacitor design
Inventor: PARK NO-SUN
IPC: H01L27/01
Filed: 2021-12-02
Abstract: A device includes a main capacitor composed of a first plate of a first back-end-of-line (BEOL) metallization layer, a main insulator layer on the first plate, and a second plate on the main insulator layer. The second plate is composed of a second BEOL metallization layer. The device includes a first tuning capacitor of a first portion of a first BEOL interconnect trace coupled to the first plate of the main capacitor through first BEOL sideline traces. The first tuning capacitor is composed of a first insulator layer on a surface and sidewalls of the first portion of the first BEOL interconnect trace. The first tuning capacitor includes a second BEOL interconnect trace on a surface and sidewalls of the first insulator layer. The device includes a first via capture pad coupled to the second BEOL interconnect trace of the first tuning capacitor.
Patent TW-202323317-A (TW)
Inventor: LIU YI-CHUN
IPC: C08F8/00
Filed: 2021-12-03
Abstract: A hydrophobic polyvinyl alcohol and a method for preparing hydrophobic polyvinyl alcohol are provided. According to embodiments of the disclosure, the hydrophobic polyvinyl alcohol includes a first repeat unit represented by Formula (I), a second repeat unit represented by Formula (II), and a third repeat unit represented by Formula (III)
         , wherein R
         1 is -Si(R
         2 )
         3 ,
         ,
         or
         ; R
         2 is independently C
         1-6 alkoxy group, C
         6-18 alkyl group, or C
         6-22 alkenyl group，and at least one R
         2 is C
         6-18 alkyl group or C
         6-22 alkenyl group；R
         3 and R
         4 are independently C
         6-18 alkyl group or C
         6-22 alkenyl group；j is 3 to 7; and, k is 1 to 30.
Patent TW-202325391-A (TW)
Title: 逆滲透系統及其操作方法
Inventor: YEH MAO-SUNG
IPC: B01D61/08
Filed: 2021-12-28
Abstract: 一種逆滲透系統，包含泵裝置、第一段逆滲透膜裝置、以及第二段逆滲透膜裝置。第一段逆滲透膜裝置包含至少一第一逆滲透膜元件，且透過第一管路與泵裝置流體連接。泵裝置配置以將待過濾水經由第一管路供給至第一段逆滲透膜裝置。第一段逆滲透膜裝置配置以過濾待過濾水而取出第一滲透水並產生濃縮水。第二段逆滲透膜裝置包含至少一第二逆滲透膜元件，且透過第二管路與第一段逆滲透膜裝置流體連接。第二段逆滲透膜裝置配置以過濾濃縮水而從濃縮水中取出第二滲透水。第一逆滲透膜元件之脫鹽率高於第二逆滲透膜元件之脫鹽率。
Patent TW-202325199-A (TW)
Inventor: LIU KUANG-YU
IPC: A47J31/24
Filed: 2021-12-29
Abstract: A dual-purpose brewing mechanism includes an Italian brewing mechanism, a cup holder, and a cup. The Italian mechanism includes a base and a brewing device. The brewing device can be used to install an Italian brewing handle for brewing espresso coffee. The cup holder is disposed on the Italian brewing mechanism at a position where it does not interfere with the installation and operation of the Italian brewing handle. An installation component is disposed on a cup body of the cup, and the installation component can be used to be installed on the cup holder so that the cup is positioned below the Italian brewing device for brewing hand-made coffee. As a result, a set of equipment has both the functions of brewing espresso coffee and hand brewing coffee, and achieves the advantages of lower equipment cost and space saving.
Patent TW-202326494-A (TW)
Title: Digitalized metal unit frame design method can shorten frame development time to overcome problems of time consuming and material consumption costs
Inventor: LIN YUAN-ZHI
IPC: G06F30/13
Filed: 2021-12-29
Abstract: A digitalized metal unit frame design method is implemented in a computer and comprises steps of reading a 3D model image file of a first metal unit frame and analyzing a moment of inertia of the cross-section of the first metal unit frame; calculating the deformation of the first metal unit frame according to the moment of inertia; determining whether or not the deformation is greater than or equals to a threshold; establishing a second metal unit frame when determining the deformation is greater than or equals to the threshold, wherein the moment of inertia of the cross-section of the second metal unit frame is greater than the moment of inertia of the cross-section of the first metal unit frame.
Patent TW-202241952-A (TW)
Title: MULTIFUNCTIONAL NATURAL KILLER(NK) CELL ENGAGERS BINDING TO NKp46 AND CD123
Inventor: AMARA CELINE
IPC: A61K39/395
Filed: 2021-12-30
Abstract: The present disclosure relates to multifunctional binding proteins comprising a first and a second antigen binding domains (ABDs) and all or part of an immunoglobulin Fc region or variant thereof, wherein the first ABD binds specifically to human CD123 and the second ABD binds specifically to human NKp46 and wherein all or part of the immunoglobulin Fc region or variant thereof to a human Fc-γ receptor. The disclosure also relates to methods for making said binding proteins, compositions thereof, and their uses, including the treatment or prevention of proliferative disorders, including Acute Myeloid Leukemia (AML) and myelodysplastic syndromes (MDS).
Patent TW-202310527-A (TW)
Title: Clip and base assembly and computer system
Inventor: TSORNG YAW-TZORNG
IPC: H02G3/02
Filed: 2022-01-19
Abstract: A clip and base assembly includes at least one polymeric clip and a base. The clip includes first and second elastic arms, and a support arm. The clip forms an aperture therein. The first and second elastic arms move between first and second positions. The first and second elastic arms are located on opposing sides with the support arm in between. The base includes a first and second sets of notches, and an elongated slot. The first set of notches is sized and shaped to receive the first elastic arm. The second set of notches is sized and shaped to receive the second elastic arm. When the first and second elastic arms are in the second position, the clip is moveable in the elongated slot. When the first and second elastic arms are in the first position, the clip is fixed respect to the base.
Patent TW-202304128-A (TW)
Inventor: IDE YUJI
IPC: H02P27/06
Filed: 2022-02-15
Abstract: 一種馬達控制裝置，具有：轉換器部，其係把來自電源的電力輸出作為直流電力；電容器部，其係保持前述直流電力；以及逆變器部，其係把前述直流電力變換成交流電力，並且，驅動馬達；更具有：湧入電流防止迴路部，其係具備在前述轉換器部與前述電容器部之間，具有抑制前述電容器部的充電中的湧入電流之湧入防止電阻器及湧入防止切換器；以及湧入防止電阻保護部，其係保護前述湧入防止電阻器；前述湧入防止電阻保護部係計算通過前述湧入防止電阻器的電力，計算規定時間內的短時間電力量，並且，根據前述規定時間內的前述短時間電力量，來產生前述湧入防止電阻器的劣化量的資訊，把前述劣化量報知到外部。
Patent TW-202222296-A (TW)
Inventor: LIN YUNG-HSIANG
IPC: A23L33/18
Filed: 2019-12-02
Abstract: 本發明提供包含具有四個胺基酸之主結構的肽，其中該序列N端及C端之該等胺基酸中之各者獨立地具有相同或不同的帶正電之側鏈，且該主結構之N端與C端之間的該等胺基酸中之各者獨立地具有相同或不同的不帶電之側鏈。本發明意外地發現，此等肽在抑制或減少膠原蛋白分解、增加膠原蛋白、彈性蛋白及/或玻尿酸產生、延遲老化、改善皮膚及抑制炎症方面具有有利作用。
Patent TW-202305037-A (TW)
Title: Liquid crystal alignment agent for optical alignment, liquid crystal alignment film and manufacturing method thereof, and liquid crystal element capable of forming a liquid crystal element with good contrast and excellent display quality even when the exposure energy for optical alignment processing is small
Inventor: KOBAYASHI OSAMU
IPC: G02F1/1337
Filed: 2022-03-14
Abstract: The present invention provides a liquid crystal alignment film capable of forming a liquid crystal element with good contrast and excellent display quality even when the exposure energy for optical alignment processing is small, and provides a method for manufacturing the liquid crystal alignment film and a liquid crystal alignment agent for optical alignment that can form the liquid crystal alignment film. A liquid crystal alignment agent for optical alignment contains at least one polymer and a solvent. In the liquid crystal alignment agent for optical alignment, at least one of the polymers is a polymer obtained by reacting tetracarboxylic dianhydrides and diamines. The raw material composition used as the raw material for the reaction of tetracarboxylic dianhydrides with diamines to obtain a polymer contains at least one compound represented by formula (1-1) or formula (1-2) and a compound having a photoreactive structure that imparts liquid crystal alignment to the alignment film by photoreaction.
Patent TW-202247383-A (TW)
Inventor: LIN CHUN-HSIEN
IPC: H05K1/14
Filed: 2022-03-24
Abstract: 本揭露的實施例提供一種線路基板與多個線路基板拼接成的拼接電子裝置。線路基板包括基板、第一金屬層、第二金屬層以及第三金屬層。第一金屬層設置於基板上，包括沿著第一方向延伸的第一連接線與第二連接線，以及沿著第二方向延伸的第一掃描線與第二掃描線。第一連接線電性連接第一掃描線。第二連接線電性連接第二掃描線。第二掃描線包括兩個分離的線段，分別位於第一連接線的相對兩側。第二金屬層設置於基板上，包括沿著第一方向延伸的第一資料線。第一資料線重疊第一連接線。第三金屬層設置於基板上，包括沿著第二方向延伸的橋接線。橋接線電性連接第二掃描線的兩個分離的線段。第二金屬層設置於第一金屬層與第三金屬層之間。
Patent TW-202248652-A (TW)
Title: probe card
Inventor: SHIMIZU TATSUNORI
IPC: G01R1/04
Filed: 2022-04-12
Abstract: The purpose of the present invention is to enable easy recognition of an alignment mark formed on a probe by suppressing reflection light from a circuit board in which a light-transmissive insulating film is formed on interlayer wires. This probe card comprises: a circuit board 103 in which an insulating film 304 and an electrode pad 3 are formed; and a probe 5 attached onto the electrode pad 3. The probe 5 has an alignment mark 7 which is recognizable from the opposite side of the circuit board 103. The alignment mark 7 is positioned on the outer side than the electrode pad 3 on the circuit board 103. The insulating film 304 is a light-transmissive thin film that covers interlayer wires 314. An anti-reflection film 6 that has a lower light transmittance than the insulating film 304 is formed on a portion of a region on the insulating film 304. The anti-reflection film 6 is formed on a region including a position corresponding to the alignment mark 7 and the periphery thereof.
Patent TW-202312013-A (TW)
Title: Information processing system and program
Inventor: TAMI KENICHIRO
IPC: G06K19/06
Filed: 2022-04-20
Abstract: To provide an information processing system capable of converting acquired electronic data into a two-dimensional code containing normal information and presenting the two-dimensional code or information associated therewith as normal content. An information processing system 10 includes: a first acquisition unit that acquires first pattern data from electronic data; a second acquisition unit that acquires second pattern data from a database; and a generation unit that combines the first pattern data and the second pattern data to generate a two-dimensional code. The generation unit determines, when the first acquisition unit acquires the first pattern data from the electronic data, the first pattern data and generates the two-dimensional code including the first pattern data.
Patent TW-202308750-A (TW)
Inventor: MIZUTANI HIROSHI
IPC: F23J15/00
Filed: 2022-04-25
Abstract: 氫製造系統(1)，被適用於燃燒爐工廠；具有：至少具備燃燒爐，與以在前述燃燒爐燃燒之熱產生蒸氣的鍋爐之附鍋爐燃燒系統(10)、至少具備由前述鍋爐排出的鍋爐排污水(F1)之中，至少一部分前述鍋爐排污水被導入而產生除去了不要的離子之分離水(F2)與含有前述不要的離子之被分離水(F3)之離子除去裝置(52)，以及藉著電解前述分離水產生氫之水電解裝置(53)之電解系統(50)、以及至少具備包含前述鍋爐排污水的餘部，對在前述燃燒爐工廠產生的工廠排水進行無機系的水處理之無機系排水處理設施(32)之排水處理系統(30)。
Patent TW-202244488-A (TW)
Title: Arrays of integrated analytical devices with reduced-scale unit cell
Inventor: CALLEBAUT HANS
IPC: G02B5/18
Filed: 2022-05-04
Abstract: Arrays of integrated analytical devices are provided. The arrays are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. In particular, the arrays provide increased efficiency of optical collection and decreased background signal as the lateral dimensions of the unit cell of devices within the array are decreased, for example as they are decreased to 2 µm, or even less.
Patent TW-202326234-A (TW)
Title: 投影系統
Inventor: FANCHIANG KUAN-HSU
IPC: G02B27/18
Filed: 2022-05-05
Abstract: 投影系統包含光源、反射式相位調制器、顯示器以及投影鏡頭。光源配置以發射第一光束。反射式相位調制器配置以調節第一光束的相位以生成一第二光束。顯示器配置以接收第二光束。顯示器位在投影鏡頭與反射式相位調制器之間。
Patent TW-202324831-A (TW)
Inventor: SRIRATTANA NUTTAPONG
IPC: H01P1/24
Filed: 2022-05-31
Abstract: According to some aspects of this disclosure a radio frequency signal coupler is provided. The radio frequency coupler includes an input port, an output port, a main transmission line extending between the input port and the output port, a coupled transmission line electromagnetically coupled to the main transmission line, at least one coupled port coupled to the coupled transmission line, and a plurality of termination ports connected to the coupled transmission line, each termination port of the plurality of termination ports being connected to the coupled transmission line at a different location to provide a plurality of coupling factors corresponding to a plurality of signal frequencies.
Patent TW-202307030-A (TW)
Title: Ultraviolet-curable heat-dissipating resin composition, heat-dissipating pressure-sensitive adhesive sheet, layered product, and method for producing layered product
Inventor: OKUHARA CHIHARU
IPC: B32B7/12
Filed: 2022-05-31
Abstract: A purpose of the present invention is to provide an ultraviolet-curable heat-dissipating resin composition excellent in terms of printability, heat-dissipating property, and adhesiveness to various substrates. Another purpose is to provide a heat-dissipating pressure-sensitive adhesive sheet obtained using the ultraviolet-curable heat-dissipating resin composition, a layered product, and a method for producing the layered product. This ultraviolet-curable heat-dissipating resin composition comprises (A) a nitrogen-containing monomer, (B) a monofunctional (meth)acrylate monomer, (C) a crosslinking component, (D) a photo polymerization initiator, and (E) a thermally conductive filler having a thermal conductivity of 3 W/m·K or greater, wherein the content of the thermally conductive filler (E) is 20-70 vol% and the content of the nitrogen-containing monomer (A) is 10-35 wt% with respect to the composition excluding the thermally conductive filler (E).
Patent TW-202248596-A (TW)
Title: Computer system, dimension measurement method, and storage medium
Inventor: OKUYAMA YUTAKA
IPC: G01B21/20
Filed: 2022-06-09
Abstract: This invention reduces the time required for dimension measurement and eliminates operator-induced error. To that end, this invention provides a computer system that extracts, from image data for a semiconductor pattern, base point coordinate information for dimension measurement of an intended location on the semiconductor pattern and uses the base point coordinate information for dimension measurement, the computer system comprising a learning device equipped with an orientation estimation model that outputs coordinate information for at least two base points as a learned result, wherein the learning device is trained in advance using training data having semiconductor pattern image data as input and coordinate information for at least two base points as output and extracts coordinate information and a dimension for the at least two base points from new image data input into the learning device.
Patent TW-202321394-A (TW)
Inventor: ISSHIKI ERIKA
IPC: C09J4/04
Filed: 2022-07-12
Abstract: A 2-cyanoacrylate adhesive composition comprising a 2-cyanoacrylate compound and a polyfunctional cyanoacrylate compound, wherein the storage modulus at 25 DEG C of a cured product obtained by homopolymerization of the 2-cyanoacrylate compound is no higher than 1.0*10<SP>7</SP> Pa.
Patent TW-202324508-A (TW)
Inventor: LIN TZE-CHUNG
IPC: H01L21/28
Filed: 2022-07-14
Abstract: The present disclosure describes a method that includes forming a fin structure with a stacked fin portion on a substrate. The stacked fin portion includes a first semiconductor layer and a second semiconductor layer, in which the second semiconductor layer includes germanium. The method further includes etching the fin structure to form an opening and etching a portion of the second semiconductor layer with a fluorine-containing gas through the opening.
Patent TW-202316486-A (TW)
Inventor: KURATA MOTOMU
IPC: H01L21/02
Filed: 2016-03-23
Abstract: 提供一種微型電晶體、寄生電容小的電晶體、頻率特性高的電晶體、包括該電晶體的半導體裝置。一種半導體裝置，包括第一開口、第二開口及第三開口，藉由進行第一蝕刻及第二蝕刻形成第一開口、第二開口及第三開口，在第一蝕刻中，為了形成第一開口、第二開口及第三開口對第一絕緣體進行蝕刻，在第二蝕刻中，為了形成第一開口對電子俘獲層、第二絕緣體、第三絕緣體、第四絕緣體、第二金屬氧化物及第五絕緣體進行蝕刻，為了形成第二開口對電子俘獲層、第二絕緣體及第三絕緣體進行蝕刻，為了形成第三開口對電子俘獲層進行蝕刻。
Patent TW-202315908-A (TW)
Title: Composition for forming silicon-containing resist underlayer film, multilayer body using said composition, and method for producing semiconductor element
Inventor: SHIBAYAMA WATARU
IPC: C08G77/18
Filed: 2022-09-06
Abstract: For the purpose of producing a semiconductor element by a subtractive method with use of a novel metal such as Ru, which is other than Cu, the present invention provides a composition for forming a resist underlayer film which is suitable for use as an etching mask for dry etching of a film of a metal such as Ru, the metal being selected from the group consisting of elements in groups 6, 7, 8 and 9 of the periodic table of the elements. The present invention provides a composition for forming a silicon-containing resist underlayer film which is formed for use as an etching mask for dry etching of a metal film that contains at least one metal that is selected from the group consisting of elements in groups 6, 7, 8 and 9 of the periodic table of the elements.